io: remove Error parameter from QIOTask thread worker

Now that task objects have a directly associated error,
there's no need for an an Error **errp parameter to
the QIOTask thread worker function. It already has a
QIOTask object, so can directly set the error on it.

Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>

2 files changed, 17 insertions, 34 deletions

diff --git a/io/channel-socket.c b/io/channel-socket.c
index 45df819a82..f385233f18 100644
--- a/io/channel-socket.c
+++ b/io/channel-socket.c
@@ -156,19 +156,16 @@ int qio_channel_socket_connect_sync(QIOChannelSocket *ioc,
 }
 
 
-static int qio_channel_socket_connect_worker(QIOTask *task,
-                                             Error **errp,
-                                             gpointer opaque)
+static void qio_channel_socket_connect_worker(QIOTask *task,
+                                              gpointer opaque)
 {
     QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(qio_task_get_source(task));
     SocketAddress *addr = opaque;
-    int ret;
+    Error *err = NULL;
 
-    ret = qio_channel_socket_connect_sync(ioc,
-                                          addr,
-                                          errp);
+    qio_channel_socket_connect_sync(ioc, addr, &err);
 
-    return ret;
+    qio_task_set_error(task, err);
 }
 
 
@@ -218,19 +215,16 @@ int qio_channel_socket_listen_sync(QIOChannelSocket *ioc,
 }
 
 
-static int qio_channel_socket_listen_worker(QIOTask *task,
-                                            Error **errp,
-                                            gpointer opaque)
+static void qio_channel_socket_listen_worker(QIOTask *task,
+                                             gpointer opaque)
 {
     QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(qio_task_get_source(task));
     SocketAddress *addr = opaque;
-    int ret;
+    Error *err = NULL;
 
-    ret = qio_channel_socket_listen_sync(ioc,
-                                         addr,
-                                         errp);
+    qio_channel_socket_listen_sync(ioc, addr, &err);
 
-    return ret;
+    qio_task_set_error(task, err);
 }
 
 
@@ -293,21 +287,18 @@ static void qio_channel_socket_dgram_worker_free(gpointer opaque)
     g_free(data);
 }
 
-static int qio_channel_socket_dgram_worker(QIOTask *task,
-                                           Error **errp,
-                                           gpointer opaque)
+static void qio_channel_socket_dgram_worker(QIOTask *task,
+                                            gpointer opaque)
 {
     QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(qio_task_get_source(task));
     struct QIOChannelSocketDGramWorkerData *data = opaque;
-    int ret;
+    Error *err = NULL;
 
     /* socket_dgram() blocks in DNS lookups, so we must use a thread */
-    ret = qio_channel_socket_dgram_sync(ioc,
-                                        data->localAddr,
-                                        data->remoteAddr,
-                                        errp);
+    qio_channel_socket_dgram_sync(ioc, data->localAddr,
+                                  data->remoteAddr, &err);
 
-    return ret;
+    qio_task_set_error(task, err);
 }
 
 
diff --git a/io/task.c b/io/task.c
index 42e1a75586..60bf1a94d5 100644
--- a/io/task.c
+++ b/io/task.c
@@ -77,8 +77,6 @@ struct QIOTaskThreadData {
     QIOTaskWorker worker;
     gpointer opaque;
     GDestroyNotify destroy;
-    Error *err;
-    int ret;
 };
 
 
@@ -87,9 +85,6 @@ static gboolean gio_task_thread_result(gpointer opaque)
     struct QIOTaskThreadData *data = opaque;
 
     trace_qio_task_thread_result(data->task);
-    if (data->err) {
-        qio_task_set_error(data->task, data->err);
-    }
     qio_task_complete(data->task);
 
     if (data->destroy) {
@@ -107,10 +102,7 @@ static gpointer qio_task_thread_worker(gpointer opaque)
     struct QIOTaskThreadData *data = opaque;
 
     trace_qio_task_thread_run(data->task);
-    data->ret = data->worker(data->task, &data->err, data->opaque);
-    if (data->ret < 0 && data->err == NULL) {
-        error_setg(&data->err, "Task worker failed but did not set an error");
-    }
+    data->worker(data->task, data->opaque);
 
     /* We're running in the background thread, and must only
      * ever report the task results in the main event loop